CN205743810U - A kind of trailing type structure of wellhead sealing device - Google Patents
A kind of trailing type structure of wellhead sealing device Download PDFInfo
- Publication number
- CN205743810U CN205743810U CN201620740663.1U CN201620740663U CN205743810U CN 205743810 U CN205743810 U CN 205743810U CN 201620740663 U CN201620740663 U CN 201620740663U CN 205743810 U CN205743810 U CN 205743810U
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- sealing
- polished rod
- servo
- packing box
- compliant platform
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Abstract
The utility model proposes the trailing type structure of a kind of wellhead sealing device, belong to oilfield machinery technical field, including sealing lid, sealing shell, upper compliant platform, servo-actuated packing box, lower compliant platform, sealing base, protection cap, connector.Servo-actuated packing box is in close contact with polished rod, and in support, compliant platform and lower compliant platform carry out horizontal plane, any direction moves in parallel；Protection cap is positioned at the sealing side of covering and is in close contact with polished rod, along with polished rod free shift in horizontal plane, and uses beveled structure, effectively prevents rainwater, sewage or sand and dust from entering；Seal at lid retaining ring and seal the annular chamber of composition at shell and, with oil refill, provide continuous lubrication and oil sealing for upper compliant platform and lower compliant platform.This utility model simple in construction, with low cost, convenient for installation and maintenance, lubrication and good seal, can effectively prevent polished rod eccentric wear, thus substantially increase the service life of packing box and polished rod, and energy-saving effect can be played.
Description
Technical field
This utility model relates to the packing box that oil pumping machine well head seals, the trailing type knot of a kind of wellhead sealing device
Structure, belongs to oilfield machinery technical field.
Background technology
In the production process of oil-field oil pumper, packing box is to fill a kind of sealing theed seal between well head and polished rod
Put.Yet with recovering the oil, scene oil pumping hole condition is complicated, usually makes oil-extractor polish-rod mill partially, and then shortens the use longevity of packing box
Life.When there is the phenomenon such as scuffing, corrosion on polished rod surface, more accelerates the abrasion of packing box, thus cause oil well to run oil, cause leakage
Oil, leakage vapour, pollute environment.
The function of tradition polish rod sealing is, by compressing wear resistant packing, polished rod is implemented " locking " sealing,
Prevent the band force feed in oil well, gas and water from emerging with the reciprocating motion of polished rod well head.This problem existed that seals mainly shows
In the following aspects: (1) causes Heavy environmental pollution: " locking " seals and necessarily cause packing_seal circle to wear and tear, gap of wearing and tearing
The oil field gas atmosphere pollution leaked out；After may wear to a certain degree, crude oil and high salinity surface water will leak ground
Face, causes the severe contamination of ground surface environment.(2) labor strength is big: oil recovery workman must make an inspection tour well site every day, tightens packing
Gland, and the new packing of replacing that must stop production for every 2 weeks, these two ongoing operations are huge burden for workman, especially
Oil field, the north in winter.(3) energy consumption is increased: polished rod is in the state held tightly by packing all the time, adds the resistance of motion, thus increases
The energy consumption of oil pumper.(4) damage polished rod: polished rod is in the Frotteurism held tightly by packing all the time, frictional dissipation make polished rod by
Slightly attenuating, fatigue stress makes to crack inside polished rod, and dual function substantially reduces polished rod service life.(5) easily cause
Sucker rod partial wear: be in rigidity oppression state due to polished rod all the time, when its motion departs from oil well axis, will drive down
The sucker rod in face deviates oil well axis and moves, and causes sucker rod partial wear, thus increases oil pumper power consumption, and easily causes
Disconnected bar accident, makes oil well be forced to stop production.
As can be seen from the above analysis, oil pumper equipment not only itself is threatened by well mouth sealing device, also to surrounding
Environment and personal safety cause serious threat.Therefore, for the reason of generation the problems referred to above, well mouth sealing device is carried out excellent
Change and improve, becoming problem in the urgent need to address.
The research at present structure of well mouth sealing device being correlated with and technology, but actual effect is not ideal enough, translation,
Servo-actuated, eccentric wear, seal or the aspect such as lubrication is still the key issue that solution is presently required.In order to solve the offset problem of polished rod,
Utilization multi-directional ball is proposed be adjusted, but multi-directional ball is merely able to adjust the inclination of polished rod, it is impossible to adjust the flat of polished rod
Shifting problem, and polished rod translation is problem common in actual application；Also someone devises and can carry out manually adjusting polished rod skew
Packing box, but it can not make, and packing box is servo-actuated along with the skew of polished rod to be offset.When polished rod occurs translation, can draw
Playing rainwater, sewage or the infiltration of sand and dust, this not only can make the abrasion of polished rod and packing box strengthen, and can be to polished rod and packing box
Cause corrosion, have a strong impact on its service life.In order to solve polished rod eccentric wear problem, someone devises moveable packing box and embraces
Tight polished rod, but packing box is held tightly, and the state of polished rod makes their frictional force increase, the energy consumption of oil pumper increases the most accordingly.Lubrication
Characteristic, in the structure of modification of wellhead sealing device, fails effectively to be applied so far.Therefore, for wellhead sealing device with
Dynamic, seal and the aspect such as life-span, it is still necessary to the configuration aspects of well mouth sealing device is further improved.
By to background information analysis it can be seen that the trackability of wellhead sealing device is poor, eccentric wear is serious, seal poor, energy consumption
The aspects such as height, life-span short, resistance to pressure reduction are problems in the urgent need to address, should also be and carry out studying and solve for its structure
Emphasis direction.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, it is provided that a kind of simple in construction, with low cost, installation
Easy to maintenance, eccentric abrasion prevention, good seal, the trailing type structure of wellhead sealing device of energy-conservation, life-span length.
This utility model solves its technical problem and be the technical scheme is that
A kind of trailing type structure of wellhead sealing device, including seal lid (1), seal shell (2), upper compliant platform (3), with
Move packing box (4), lower compliant platform (5), sealing base (6), and middle part all has circular hole, polished rod (7) to pass from circular hole, and can edge
The passage that in the middle part of above-mentioned each assembly, circular hole is constituted to move up and down.
Seal lid (1) with seal shell (2) top compact siro spinning technology, apart from adjustable, seal and cover (1) and servo-actuated packing box (4)
Between be upper compliant platform (3), be lower compliant platform (5) between servo-actuated packing box (4) and sealing base (6), sealing base (6)
With sealing shell (2) bottom compact siro spinning technology；Seal between lid (1) with sealing shell (2) up and down apart from adjustable, in order to it is right to adjust
Internal each parts, especially to upper compliant platform (3), servo-actuated packing box (4) and the compression degree of lower compliant platform (5).
Servo-actuated packing box (4) is in close contact with polished rod (7) by the packing at circular hole in the middle part of it, polished rod (7) relatively with
During dynamic packing box (4) up and down motion work, play the effect that polished rod (7) is sealed, meanwhile, servo-actuated packing box (4) and polished rod (7)
It is geo-stationary in the horizontal direction, when polished rod (7) occurs eccentric, drives servo-actuated packing box (4), compliant platform (3) in support
In carrying out horizontal plane with lower compliant platform (5), any direction moves in parallel.
The external diameter of servo-actuated packing box (4) constitutes annular chamber (8) less than the internal diameter of sealing shell (3), centre, seals lid (1)
With the external diameter that the internal diameter of the middle part circular hole of sealing base (6) is more than polished rod (7), thus give servo-actuated packing box (4) and polished rod (7)
In common horizontal plane, any direction moves in parallel and provides space.
This utility model does not has special definition and requirement to the internal structure of servo-actuated packing box (4), although different dishes
Root box internal structure is different, but is all dependent on internal packing and holds polished rod (7) tightly, same ensureing that polished rod (7) freely up and down moves
Time, play the sealing function to polished rod (7).Therefore, as long as external structure meets the packing box of this utility model requirement, all may be used
As the servo-actuated packing box (4) in this utility model.
Seal the difference of the internal diameter of shell (2) and the external diameter of servo-actuated packing box (4), less than sealing lid (1) and sealing base (6)
The difference of external diameter of internal diameter and polished rod (7) of middle part circular hole.This structure can ensure, at polished rod (7), extreme eccentric situation occurs
Time, servo-actuated packing box (4) first touches the inner side sealing shell (2), it is impossible to producing translation further, polished rod (7) now is no
Can come in contact with sealing circular hole in the middle part of lid (1) and sealing base (6), i.e. polished rod (7) will not be caused abrasion, also will not simultaneously
Cause, due to this fricative additional energy, also acting as energy-conserving action.
Upper compliant platform (3) is fixed on sealing lid (1) or servo-actuated packing box (4), during to avoid translating, displacement occurs, loses
Go to support, seal and lubrication.When being fixed on sealing lid (1) and being upper, upper compliant platform (3) is exactly static, servo-actuated packing
Box (4) its translation gliding relatively；When being fixed on servo-actuated packing box (4) and being upper, upper compliant platform (3) is along with servo-actuated packing box (4)
Joint translation moves, and seals relative translation slip between lid (1).Certainly, upper compliant platform (3) is if including more than 1 group
During part, multiple assemblies can also be separately fixed on sealing lid (1) and servo-actuated packing box (4), as long as can guarantee that servo-actuated packing box
(4) normal translational motion.
Lower compliant platform (5) is fixed on sealing base (6) or servo-actuated packing box (4), with the situation of upper compliant platform (3)
Identical.
Upper compliant platform (3) and lower compliant platform (5) can use corrosion resistant, have resilient annular packing material structure
Become, act primarily as support, seal, reduce the effect of translational friction.Use resilient annular seal material, adjust and seal lid (1) with close
When sealing the distance up and down between shell (2), it can be produced different pressure, thus cause different deformation, thus adjust close
Envelope degree and the size of translation frictional force.
Protection cap (9), is positioned at sealing lid (2) top, is in close contact with polished rod (7) by the circular hole in the middle part of it, with polished rod
(7) in carrying out horizontal plane, any direction moves in parallel.Encapsulant can be used between protection cap (9) and polished rod (7), prevent rainwater
Or sewage penetrates into, and can effectively prevent sand and dust from entering, it is to avoid sand and dust aggravate servo-actuated packing box (4) and the abrasion of polished rod (7).Due to
In protection cap (9) can carry out horizontal plane along with polished rod (7), any direction moves in parallel, when polished rod (7) occurs eccentric, and Bu Huifa
Raw eccentric wear.
Protection cap (9) is beveled structure, it is simple to rainwater or sewage are along the landing of beveled structure face.
Protection cap (9) bottom is connected for magnetic between lid (1) upper surface with sealing, and can use and be partially submerged into Magnet at this
Realize, then protection cap (9) is attracted by the magnetic force and is sealing lid (1) upper surface, is not affecting the same of protection cap (9) translational motion
Time, it is unlikely to by polished rod (7) with moving up and down.
There is composition annular chamber (11) between retaining ring (10), and polished rod (7) on the top sealing lid (1), with oil refill.Then
Lubricating oil can be along with the up and down motion of polished rod (7), and uniform and stable provides lubrication for the packing in servo-actuated packing box (4), reduces
Abrasion, saves energy, raising service life；Meanwhile, along with the translational motion of servo-actuated packing box (4), uniform and stable on
Moving platform (3) provides lubrication, reduces eccentric wear, enhancing sealability, improves service life.
Annular chamber (11) herein, moreover it is possible to upper compliant platform (3) and polished rod (7) are played the effect of oil sealing, increases further
Strong sealing effectiveness, prevents well head leakage of oil.
Additionally, the upper surface that retaining ring (10) can also effectively stop rainwater or sewage end count capping (1) enters annular chamber
(11), it is to avoid corrode or affect lubricant effect.
There is tank filler sleeve (12) sealing on shell (2), close during normal work, when requiring supplementation with lubricating oil, through tank filler sleeve
(12) in annular chamber (8), lubricating oil is injected.Along with the translational motion of servo-actuated packing box (4), servo-actuated flat under uniform and stable being
Platform (5) provides lubrication, reduces eccentric wear, enhancing sealability, improves service life.
Annular chamber (8) herein, moreover it is possible to lower compliant platform (5) is played the effect of oil sealing, further enhances sealing effectiveness,
Prevent well head leakage of oil.
Connector (13) is arranged at the bottom of sealing base (6), can make screw thread, flange or thimble connector mode, with other
Wellhead assembly or well head are joined directly together.
Compared with prior art, this utility model has the advantage that
This utility model simple in construction, with low cost, convenient for installation and maintenance, use servo-actuated packing box to rely on upper compliant platform
Realize, along with polished rod, the structure that any direction in horizontal plane moves freely with lower compliant platform, and each parts are radial dimension of joins
Close design, effectively solve eccentric wear problem, and can ensure polished rod seal effect, substantially increase making of packing box and polished rod
With the life-span, and energy-saving effect can be played.Protection cap translates along with polished rod, and uses beveled structure, effectively prevents rainwater, sewage
Or sand and dust enter, substantially improve the working environment of servo-actuated packing box, extend service life, it is ensured that lubricant effect.Utilize
Seal at lid retaining ring and seal the annular chamber constituted at shell with oil refill, can respectively go up compliant platform, under servo-actuated put down
Platform, and polished rod or even packing provide continuous lubrication and oil sealing, reduces radial and axial friction, simultaneously work as energy-conservation, seal,
The multiple action such as increase the service life.
Accompanying drawing explanation
Fig. 1: overall sectional structure chart.
Fig. 2: maximum eccentric translation sectional structure chart.
In figure: 1 seal lid, 2 seal shells, compliant platform on 3,4 servo-actuated packing boxs, 5 times compliant platforms,
6 sealing bases, 7 polished rods, 8 annular chambers, 9 protection caps, 10 retaining rings, 11 annular chambers, 12 tank filler sleeves, 13 companies
Fitting.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is described in further detail:
Such as Fig. 1, overall sectional structure chart is by sealing lid (1), sealing shell (2), upper compliant platform (3), servo-actuated packing box
(4), lower compliant platform (5), sealing base (6), polished rod (7), annular chamber (8), protection cap (9), retaining ring (10), annular chamber
(11), tank filler sleeve (12), connector (13) are constituted.
Seal lid (1), seal shell (2), upper compliant platform (3), servo-actuated packing box (4), lower compliant platform (5), sealing
Pedestal (6) middle part all has circular hole, polished rod (7) to pass from circular hole, and can enter along the passage that circular hole in the middle part of above-mentioned each assembly is constituted
Row moves up and down.
Seal lid (1) with seal shell (2) top compact siro spinning technology, apart from adjustable, seal and cover (1) and servo-actuated packing box (4)
Between be upper compliant platform (3), be lower compliant platform (5) between servo-actuated packing box (4) and sealing base (6), sealing base (6)
With sealing shell (2) bottom compact siro spinning technology；Seal between lid (1) with sealing shell (2) up and down apart from adjustable, in order to it is right to adjust
Internal each parts, especially to upper compliant platform (3), servo-actuated packing box (4) and the compression degree of lower compliant platform (5).
Servo-actuated packing box (4) is in close contact with polished rod (7) by the packing at circular hole in the middle part of it, polished rod (7) relatively with
During dynamic packing box (4) up and down motion work, play the effect that polished rod (7) is sealed, meanwhile, servo-actuated packing box (4) and polished rod (7)
It is geo-stationary in the horizontal direction, when polished rod (7) occurs eccentric, drives servo-actuated packing box (4), compliant platform (3) in support
In carrying out horizontal plane with lower compliant platform (5), any direction moves in parallel.
The external diameter of servo-actuated packing box (4) constitutes annular chamber (8) less than the internal diameter of sealing shell (2), centre, seals lid (1)
With the external diameter that the internal diameter of the middle part circular hole of sealing base (6) is more than polished rod (7), thus give servo-actuated packing box (4) and polished rod (7)
In common horizontal plane, any direction moves in parallel and provides space.
Upper compliant platform (3) is fixed on sealing lid (1) or servo-actuated packing box (4), and lower compliant platform (5) is fixed on sealing
On pedestal (6) or servo-actuated packing box (4), during to avoid translating, there is displacement.
Protection cap (9) is positioned at sealing lid (1) top, is in close contact with polished rod (7) by the circular hole in the middle part of it, can be with polished rod
(7) in carrying out horizontal plane, any direction moves in parallel.Between protection cap (9) and polished rod (7) use encapsulant, prevent rainwater or
Sewage penetrates into, and can effectively prevent sand and dust from entering, it is to avoid sand and dust aggravate servo-actuated packing box (4) and the abrasion of polished rod (7).And protect
Protecting cover (9) is beveled structure, it is simple to rainwater or sewage are along the landing of beveled structure face.
Seal and between top retaining ring (10) and the polished rod (7) of lid (1), constitute annular chamber (11), with oil refill.Retaining ring
(10) can effectively stop that the upper surface of rainwater or sewage end count capping (1) enters annular chamber (11).Lubricating oil can be along with light
The up and down motion of bar (7), uniform and stable provides lubrication for the packing in servo-actuated packing box (4)；Meanwhile, along with servo-actuated packing box
(4) translational motion, uniform and stable provides lubrication for upper compliant platform (3).Annular chamber (11) can also be to upper compliant platform (3)
Effect with polished rod (7) plays oil sealing, further enhances sealing effectiveness, prevents well head leakage of oil.
There is tank filler sleeve (12) sealing on shell (2), close during normal work, when requiring supplementation with lubricating oil, through tank filler sleeve
(12) in annular chamber (8), lubricating oil is injected.Along with the translational motion of servo-actuated packing box (4), servo-actuated flat under uniform and stable being
Platform (5) provides lubrication, and lower compliant platform (5) can also play the effect of oil sealing simultaneously.
Connector (13) is arranged at the bottom of sealing base (6), can make screw thread, flange or thimble connector mode, with other
Wellhead assembly or well head are joined directly together.
When polished rod (7) occurs eccentric situation, such as Fig. 2, seal lid (1), seal shell (2), sealing base (6), retaining ring
(10), tank filler sleeve (12), connector (13) are in fixing state all the time；And compliant platform (3) in servo-actuated packing box (4) support
With lower compliant platform (5) along with translation the most eccentric together with polished rod (7), protection cap (9) is attracted by the magnetic force and is sealing the upper table of lid (1)
Face, also with polished rod (7) together the most eccentric translation, also ensure that when polished rod (7) moves up and down simultaneously, will not be with servo-actuated packing
There is eccentric wear in box (4) and protection cap (9).
It is additionally, since in this utility model the difference of the internal diameter sealing shell (2) and the external diameter of servo-actuated packing box (4), is less than
Seal the internal diameter of the middle part circular hole of lid (1) and sealing base (6) and the difference of the external diameter of polished rod (7).Therefore, even occurring extreme
The situation of maximum eccentric, is also that servo-actuated packing box (4) first touches the inner side sealing shell (2), thus stops polished rod (7) to produce
Translation further, then polished rod (7) will not come in contact with sealing circular hole in the middle part of lid (1) and sealing base (6), i.e. will not be to polished rod
(7) cause abrasion, be also not result in, due to this fricative additional energy, also acting as energy-conserving action simultaneously.
The foregoing is only preferable embodiment of the present utility model, not in order to limit this utility model, all in this reality
Within novel spirit and principle, any modification, equivalent substitution and improvement etc. made, should be included in of the present utility model
Within protection domain.
Claims (9)
1. the trailing type structure of a wellhead sealing device, it is characterised in that: include sealing lid (1), sealing shell (2), upper servo-actuated
Platform (3), servo-actuated packing box (4), lower compliant platform (5), sealing base (6), and all there is circular hole at middle part, polished rod (7) is from circular hole
Pass；
Seal lid (1) and seal shell (2) top compact siro spinning technology, apart from adjustable, between sealing lid (1) and servo-actuated packing box (4)
For upper compliant platform (3), being lower compliant platform (5) between servo-actuated packing box (4) and sealing base (6), sealing base (6) is with close
Envelope shell (2) bottom compact siro spinning technology；
Servo-actuated packing box (4) is in close contact with polished rod (7) by the packing at circular hole in the middle part of it, in support compliant platform (3) and
In lower compliant platform (5) carries out horizontal plane, any direction moves in parallel；
The external diameter of servo-actuated packing box (4), less than sealing the internal diameter of shell (2), middle constitutes annular chamber (8), seals lid (1) and close
The internal diameter of the middle part circular hole of envelope pedestal (6) is more than the external diameter of polished rod (7).
The trailing type structure of a kind of wellhead sealing device the most according to claim 1, it is characterised in that: seal shell (2)
Internal diameter and the difference of the external diameter of servo-actuated packing box (4), be less than internal diameter and the light of the middle part circular hole sealing lid (1) and sealing base (6)
The difference of the external diameter of bar (7).
The trailing type structure of a kind of wellhead sealing device the most according to claim 1, it is characterised in that: upper compliant platform (3)
Being fixed on sealing lid (1) or servo-actuated packing box (4), lower compliant platform (5) is fixed on close sealing base (6) or servo-actuated packing box
(4) on.
The trailing type structure of a kind of wellhead sealing device the most according to claim 1, it is characterised in that: include protection cap (9),
It is positioned at and seals lid (1) top, be in close contact with polished rod (7) by the circular hole in the middle part of it, any in carrying out horizontal plane with polished rod (7)
Direction moves in parallel.
The trailing type structure of a kind of wellhead sealing device the most according to claim 4, it is characterised in that: protection cap (9) is umbrella
Shape structure.
The trailing type structure of a kind of wellhead sealing device the most according to claim 4, it is characterised in that: protection cap (9) bottom
It is connected for magnetic between lid (1) upper surface with sealing.
The trailing type structure of a kind of wellhead sealing device the most according to claim 1, it is characterised in that: seal the upper of lid (1)
There is composition annular chamber (11) between retaining ring (10), and polished rod (7) in portion, with oil refill.
The trailing type structure of a kind of wellhead sealing device the most according to claim 1, it is characterised in that: sealing shell (2)
On have tank filler sleeve (12), in annular chamber (8), inject lubricating oil through tank filler sleeve (12).
The trailing type structure of a kind of wellhead sealing device the most according to claim 1, it is characterised in that: sealing base (6)
Connector (13) is arranged at bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620740663.1U CN205743810U (en) | 2016-07-14 | 2016-07-14 | A kind of trailing type structure of wellhead sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620740663.1U CN205743810U (en) | 2016-07-14 | 2016-07-14 | A kind of trailing type structure of wellhead sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205743810U true CN205743810U (en) | 2016-11-30 |
Family
ID=57378637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620740663.1U Expired - Fee Related CN205743810U (en) | 2016-07-14 | 2016-07-14 | A kind of trailing type structure of wellhead sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205743810U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014320A (en) * | 2016-07-14 | 2016-10-12 | 哈尔滨理工大学 | Follow-up type structure of wellhead sealer |
-
2016
- 2016-07-14 CN CN201620740663.1U patent/CN205743810U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014320A (en) * | 2016-07-14 | 2016-10-12 | 哈尔滨理工大学 | Follow-up type structure of wellhead sealer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161130 Termination date: 20170714 |